contrera.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:39:2c:a0:c9:0c:15:a5:24:96:a1:04:24:32:e6:2b:12:a2 was issued on by Let's Encrypt.

This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=contrera.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:39:2c:a0:c9:0c:15:a5:24:96:a1:04:24:32:e6:2b:12:a2
Serial Number (int): 280792273586807901343019602878755569865378
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: a9:1b:61:4e:29:c0:0d:3b:a2:e2:51:96:98:fe:b1:b7:78:7a:c6:20
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a2:f6:99:2d:37:fe:6a:33:a9:5a:a1:bb:cc:61:94:57:8c:58:04:04
Fingerprint (sha256): b3:8f:d6:f1:20:fc:7e:7a:fc:8a:e6:67:ef:f6:f1:9c:4a:0b:83:df:88:f2:da:54:f3:ed:58:c7:c4:24:5a:b3

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate contrera.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for contrera.com

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

contrera.com

Other certificates including the domain name contrera.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for contrera.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2OOkOHcUohurcgbLnCet
wUZ+xJG7pTzxCihmSIgBwlsgCkRKNmvg0/r/ijhplvF/hH9eHvJjgIn/PllDVc9R
+RnKYv+uUCBuDvtX00O9bi838AUFqHl/MykbbrXqiDOFR3+PNX4hNviqs8OTklPi
Ap5xPLeKBJU8IT4qWyhCQm9u+WqhhiHusxYkc7bAZ4r1VcRixuU5etOd7OCc+IPb
H1hEBJhVjVZTLcfjk3p7txAk2CeuZIZG0QmIdGX/WZ/xKBYFtc7GZRlKvs4+1rl9
Gap3HZmiEPh8BRU+Qm3/d73p0B0miPUSfXvSdzDnZxgCbSHJszBosfYI6ja7iwfu
OIWd+hYXO6BJef8DjpTqQkKBOiNP5m+dDI/ZFNpi0LtnVKjxm7A5fLeqimYrMoZ5
id6Gm0ACNHMVz6XXNeI/N0sHnAPRXTiprbaFigW50f1uPiFUAQAiwW4DFe/tLKkf
2FFc2EODv9sahrRazU2Bg/iE6Q6yR7k4AdH41r3YPwEo8vReJbzldW1RksVAH4dl
C+z0BR9hPExFZ8CpBJnjBMoFTXEpShZGdFzEKJydQ7WXTkdGFk+Utsz6Kc5X8Tf7
1fluxUZ0zxkYL+UoeVKCyslnQcw51aXbZJJ/XtpD5kXAVevLzOG9kfE7zXPoCMsf
UdyQ3GdMJ0jKZIWd0iVH/ksCAwEAAQ==
-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 280792273586807901343019602878755569865378
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-25 04:20:13 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-23 04:20:13 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'contrera.com'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 884830838381417542583651002028504486578540714216244600457583796035538764091650001056904420148231259534031999191201435877310797424925843449085691713780335584792359218672659476312408676403856906241435861794129567379787265686551446057074363290226114845855621899728952689027305511792294393531787971743767376132241284553653625415196724027284315436390422011907319582525892698235849882801382008143919099459149022166988181657586790403442045032206852821561660709673415655685836763391932537984897037263934810375007863349876910615129818489316038953152961199659684111357769665131208867063172291314445182951999120053369339629707883883758984639625380632290389600147293144371976137998512720301473767827851542341745438524519110290377031738078508275466151317139308295059771930720743584457012566489812248387526564303481885548390539781150609374944502553641070620144733510531834419969354976388482148284724222628459930558739936358244635692247542629775016297246519910122178709008172091214645172685754183198296062722327140049669303854878384165216312284271367362170865569372107452257039413396657404403861082286654617755942365238058537206215003569129660850179193749704199824633048116167144050319490661563362083899157504111627941993212523966126831029386214987
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							a91b614e29c00d3ba2e2519698feb1b7787ac620
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'contrera.com'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c279293b80000040300483046022100a9fa4efc618c8e7f73a2bb5e0d60d535384afb19e10eba925f28737629eff4e7022100f646b7f8491804b0a3d248cea08a7adae49cb50a7eb8ba06382a7f14bdbe2aba007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c279293d90000040300463044022015be716b6bd960249233890c310f6ed09231d1849b1f94a2e6314d2d2bc91e45022055f91d14e4e8836c7a929e817fbd676fdb7aee59a989b494ba7702aa0cf4dab7
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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